That would mean 169 for the next update if it is released after 12 months expires. If you dont renew till the next version you may miss a critical update, if you do renew you could do in excess of 1 renewal before the full version update(that's 2 years according to this scheme).
I doubt anyone with any sense could jump on board not knowing when that will come(the full version upgrade that is) plus no hot fixes after 12 months if you elect not to renew.
I guess it may be too late to state that in this thread though.
Edit: if they follow the Sonar model they could get rid of versioning altogether which is where everything seems to be heading I'm afraid.