Coinomi with DNR support on iOS is now available! 

https://twitter.com/kimionis/status/982314290244878336

No,

Just download new wallet, unpack and start.
After that it will re-index blocks and sync if there is something to sync to be up to date.

You should see you coins after that, don't need to create any new address or anything for that matter.

Backup of wallet.dat is just precaution if something goes wrong in the process.

Until BTC starts moving and will be

I have been trying to sync but it is not moving beyond block 666912. i am using v2.0
anyone can help how to sync?

Try using chaindata if your wallet stops syncing.

How to guide below.
https://denariustalk.org/index.php?/topic/157-sync-denarius-fast-any-os-chaindatazip/

No there isn't but we know that Carsen is working on it behind the scenes.

I'm hoping that it won't be too long now as again my wallet got stuck yesterday and now I have to add the chaindata once again. I think this is the 6th time I've had to do this but its okay with me as its a short term pain for long term gain. I know Carsen will have the new wallet version out soon which will hopefully fix all the issues we are currently facing.

I'm not 100% sure but I do believe there is some people that help out where they can. I think most of the coding is done by Carsen but not sure about the other things like the website and designs of the coin.

It is mainly me developing, though a lot of community members have and do pitch in when they can, and any other community members can feel free to pitch in whenever they please

No ETA on mandatory update yet, still working out bugs.

DNR is based on modified NIST5, right?
Baikal just released updated firmware for Giant X10 that mine NIST5.