Its a free update to 2 if you bought in July or you buy it now and upto the release.
It is a paid upgrade for the rest of us which is kinda nice really, I have only been using Silo six months or so but the ammount of extra stuff i have got in that six months for free off Nevercenter is shocking to be honest, And that goes back even further like i said my knowledge is just the last six months.
I can tell you that all the other modellers that were announcing updates were implementing things that were implemented in Silo for free over the last year as part of there workflow updates, I have said before that i think with 2 you are not actually paying for the things that have been announced in the upgrade, You actually are paying for getting those things knowing that you have the ability to be part of how they develop through upgrades into the ultimate versions of those tools, Nevercenter are quite open that every tool will be created and built with the interaction of the community so while they may not look out of this world at the moment they haven’t been in seats user tested and refined, Also along the way the guys at Nevercenter tend to notice other things that can be done with the ideas that shock and surprise (Look at the topo brush).
Like i have also said before it’s not 2 that excites me personally but the following 2.1 2.2 and so on, Nevercenter have a strange way of adding features as they go and a big upgrade like 2 is actually a big upgrade, I say its a big upgrade because the core has been rewritten and you can try that out now, They have included some of the new code in the 1.42 and believe me the Topo brush has taken a step forward to the point where it is extremely easy to use and get good results, It is also so much faster.
I have to say that the growth of Silo is great to see because it gives Jam and Feed the ability to keep making this tool even more powerful.