Hi,
I just bought Cubase 5. Now there’s a v.6 on the immediate horizon.
Am I eligible for a free upgrade to v.6? I bought v.5 Dec. 21, 2010.
Phil
Have a look at the sticky
If you bought it after the 1st of December 2010 then you get version 6 for free 
Actually, my reading of the release says that you are
eligible to obtain a Grace Period update or upgrade to Cubase 6 for a special price.
And the special price is not free…
I bought CB 5 on Dec 30, and apparently I can upgrade to CB 6 for 20 Euro… Free would be nicer, but so be it…
If you bought earlier, the upgrade fee is more as other threads have been discussing…