It should happen first half of next year I imagine. This is not dependent on bonding that was assumed to be the case by a few people, 5 and 10Mbps are doable without bonding though some areas may need it which will potentially slow release to them.
No news on the other tiers at all.
There have been no official announcements regarding upgrades at all the only announcement has been that 10Mbps upstreams would be trialled but again given that VM like to be faster than BT and BT are making an 'issue' out of having 10Mbps upstream on their FTTC service it's a fair bet that VM will want to keep their speed advantage on one level or another, it's their main marketing tool on internet side of the business.
Shouldn't be too long I imagine before we see a user saying 'Oh my goodness I have more upstream than usual'
