Unlikely. This is the most recent ReadyNAS product which has been released by Netgear (fall 2011). They sometimes do a temporary price drop on items to spur interest and sales. Over here (US) the Duo V2 has had a corresponding price drop, but the NV+ V2 has not, although they are offering a rebate that is a 25% reduction. (I would prefer the temporary price drop myself).
That being said, there are some who are expecting a refresh of the Ultra/Pro lines because they are now two years old. (Released in 2010). We will all know when a new model is introduced as they will hit the shelves about the same time as the announcement.
If you have done your comparisons and one of these is a model you are interested in, this may be a good time to grab one.
Remember - the NAS is not a backup plan.
Backup = Good, No Backup = Bad