when will Diamond 3.0?
reduction of annual interest will begin as indicated on the first page after 2.500.000 coins (in 2018 year)?
No specific date can be given for 3.0 but 6 months time from now should be enough to deliver it.
Principles of coin rollout plan wouldn't change and once we hit 2.5 million we move into a downward curve PoS reduction (that's the only significant change here) which will make the coin rollout feel more natural rather than have a sharp drop. When we reach 2.5 million is up to how much people stake as the trigger is not set to any particular block number/date but sure 2018 is the year.
if ya check
https://chainz.cryptoid.info/dmd/#!overviewyou see we have average 1300 new coins a day
we have 1900000 DMD now
so 600000 DMD are missing
600000/1300 = 460 days
if more coins participate and claim POS rewards then a bit faster
if more coin age burned by transactions without claim POS rewards first then a bit slower
its hard to predict POS participation
the POW part is easy to predict its around 170 DMD a day
so yes it will be most likely 2018
regarding DMD 3.0 release the 6 month is a plan
we all know that there can be differences between plan and final result
that can go in both directions we can even finish it 2 month earlier
or 5 months later.......
Q3 2017 is the plan for release of DMD 3.0
means we aim for a release in area July - September
in a pretty similar timeframe (Q3/Q4 2017) we hope to release the first UCA service with positive economic impact on DMD
there we see a release in multiple cycles
which means a working prove of concept with base features
and follow up releases that add additional abilities and "fluff"