You can already get 200 Mbps homeplug stuff
http://www.shopmagenta.com/product/CXPAV200ETH.aspx
but its not as tidy as the 11 Mbps and 85 Mbps ones.
If you want them on the cheap you can get them here
Up untill recently they were the same as the black solwise ones.
http://www.shopmagenta.com/product/HP85.aspx http://www.nickknows.com/browse.php?category=639
At adsguide they rated the solwise ones higher than the more expensive develo ones.
I like the idea of the duo ones at nickknows, would be very useful for having VOIP phones
about the house. Pity they are only 11 Mbps ones.