Here's a brief quote from a post by knreed made on April 1. Says it all why you should convert Now:

34 days till the last UD job is send out and 74 days that that database is send to the software graveyard.

I think that everybody who reads your message already has BOINC...
I installed UD on a computer a long time ago on a friend's computer, i don't see him much, and he gets from time to times some results back on his UD agent... I wont go and ask him to put Boinc... he doesn't seem to be much concerned about that...
the people like that must be the 6% left.

We know that 15% are "double agent" crunchers who e.g. play the low throttle double points game. I run 1 at 25% on 1 core just to stay in touch if work flows for those on that agent, AND have that safety if the GPFS goes south again. I am, looking at the numbers, the last on my big team and big teams are not the issue, except maybe Easynews who crunch for bandwidth credits on the side. For that WCG has put an extra key in place, so they can continue getting credit based on run time. WCG has addressed the partners, but that is entirely out of the public view.

So it's going to be a crunch in the last few weeks and days when the exclamation mark starts appearing and persists when work stops being received at around June 1, so is the plan.

There are 5 days left to grab the last UD agent job Ladies & Gentlemen crunching members. For those that have BOINC but UD agent not voluntarily going away, follow the just added point 20 in The Migration FAQs

Is it the last day today to get a UD agent job? Fired up one just to see that notification replacing the graphics to see it's done and dusted, on the member side. Still lots of work on the tech side to gut the old out, convert their own internal crunchers, which are apparently still a bunch and push out the BOINC installations.... standing by on the 3 hours and holding pattern ;>)