http://bravenewcoin.com/news/tau-chain-a-programmers-perspective/
Writeup yesterday from bravenewcoin.com

My takeaway is that Ohad and company are super smart, the writer is also smart. Tau has a lot to live up to. It's hard to describe. And for some reason the author thinks Tau is spammy. I haven't gotten that vibe and I'm on twitter a lot. The tau hash tags are relatively quiet and so is BCT. Where are you guys being loud?

Updating the Presale Terms

Dear Community,

About +1yr ago I published Zennet's design.

So we do not sell Zennet coins anymore, and all previous buyers will get Agora, offering no less but much more technological and economical features. The current sale terms are as follows: From now on, we sell 50% of coins for approx $2M: The current price is $100 for 3.5 million (3,500,000) Agora coins, and will go up in 2% every week. Total number of coins is 147,000,000,000.

rest of the coins are simply not on held bittrex

I don't even think the current total amount of AGRS sold is over 6% , never mind over 10% to 1 person

So we do not sell Zennet coins anymore, and all previous buyers will get Agora,
offering no less but much more technological and economical features.
The current sale terms are as follows: From now on, we sell 50% of coins for approx $2M: The current price is $100 for 3.5 million (3,500,000) Agora coins, and will go up in 2% every week. Total number of coins is 147,000,000,000.

This sale will go into BTC address 1BzwxgzrdiW5Gdc3kfoUgxeHAhRjnMmrVs and everything will be calculated according to the BTC/USD rate at the moment of transfar (according to blockchain.info website showing the tx value at the time transacted). All past private buyers have bought on significantly higher prices, and will be compensated and get 25% retroactive discount over this current price.

We will issue an intermediate token over Counterparty, each single token will represent 3500 Agoras.
EDIT: We're on Omni http://www.idni.org/blog/omni

The process of purchasing is as follows: email me to ohad@idni.org (yeah that’s my new email, but you can still reach me at ohadasor@gmail.com), I’ll send you an agreement, reply to me that you agree, specify a name and country of residence of whom to write a tax receipt in behalf to (of course I have nothing to do with private details, I just need name and country to write on the receipt), transfer the coins, and send me the txid so I’ll know to associate it with you. Then I’ll send you the Counterparty tokens to the address you’ll ask me to, or to the sender’s address by default.
I’m doing it all manually for several reasons, so please understand if processing your request takes a few days. Because of that, please do not begin the process if you plan to purchase with less than $25.
Previous buyers, I'll contact you to send you the tokens, please contact me first when you see this messege.

so far ~7M tokens were sold. if you want to track down how many sold in different milestones, see the blog on idni.org. in general there is no distinction between buyers on zennet's time to tau's time. presale is for all tokens (namely 97% not counting the "premine"). to see the latest price calculations cf the end of the "project roadmap" blogpost.
i didn't understand the last question

Still, early buyers have to be incentivized. We had a weekly 2% raise in price and recently suspended it. But from May 1 the price per token we sell at will be 20 cents, going up 5% monthly (recall it has nothing to do with prices people sell at on the exchange). Beginning from today we offer the following wholesale discount: every additional 10K tokens will give additional 5% discount. So if one purchases 30K tokens, the price for the first 10K is the regular price, then a 5% discount on the next 10K tokens, then 10% discount on the subsequent 10K tokens. All purchasers via email receive a tax invoice with their desired recipient name. A buyer that agrees not to receive the intermediate tokens but only the final coins gets additional 15% discount. The total marginal discount will never go below 50% (as to be fair with earlier buyers).

More than 90% in devs hand, that's a lot even if you dont follow the cryptospace financial structure

20centsx5weeksx5%=25cents of $ ?

Still, early buyers have to be incentivized. We had a weekly 2% raise in price and recently suspended it. But from May 1 the price per token we sell at will be 20 cents, going up 5% monthlyquote]

This is like a standard IPO except the rules of distribution are slightly tweaked as this is a long duration IPO this gives plenty of time for investors to buy in so no one can complain about missing it if it has been available to buy not for 1 months but for over 8 months now and possibly even more than another 5+ months

It has been noted before , these coins are representations of tokens that will be converted at the time the economical aspect of tau-chain is implemented . Unsold coins will be destroyed if they are  not sold