I believe that we already have to renew the photocard driving licence every 10 years. But this doesn't involve a retest. I don't think there are any plans to make us resit the test every 10 years. I think the idea of 10 year renewal is basically to update your picture (although obviously at our cost!).
With regards to the bikes, I think they are saying that the minimum age for direct access will change from 21 to 24. So if you are over 24, you will be able to sit just the direct access test to qualify to ride any bike. However, if you want to ride the bigger unrestricted bikes before the age of 24, then there will be a series of tests allowing you to progress from moped (age 16), light bike (age 17), medium bike (age 19) to large unrestricted bikes (age 21).
It looks like this went for consultation to motoring groups, etc. So I'm not sure what the final outcome will be. If I've got this wrong - please shout!
There's some more info on this on the DFT website -
http://www.dft.gov.uk/consultations/closed/thirddirective