Since the HOME site is based in London, The site update will probably (& this is based on my opinion that they will update 12 am) take place around 6-7 pm EST (daylight saving time variant). Seeing that The U.K. is ahead of us 5 hours, So with that in mind.... What are their business hours?? What time are the Tech's there? Too many things to consider and make an actual solid theory..
I have my PSP & cell phone with me & both of them have that site as home page, I check about every 2 hours, There is really only one thing about waiting and that is:
That damn TICK TOCK TICK TOCK sound it's DRIVING ME CRAZY!!! < not obsessed!
I thought I saw a post of the exact wording of when Home beta might start and it said April-August. So it seems it doesn't have to actually start in April. Maybe someone can dig it up to double check fi they are that interested.