That was my thought as well. However I have a DK1, DK2 and a CV1 Rift, and each one was better than the last.IMO any resolution less than 4k per eye is Not Ready For Prime Time
Thus I'm interested to see what going from 1k to 2.5k does. Maybe it's OK. I had hoped for 4k (maybe there is a CV2 Rift around the corner sometime?) but 2.5k is still a big jump up.
I'll be sure to let you know!