While it will slow down after a year or so of normal use, you should be on track for a standard two - year upgrade cycle. (digitaltrends.com)
The recent slump in tablet sales also makes sense if you accept that older people have longer upgrade cycles than younger people. (smashingmagazine.com)
Both are reported to set provide the new upgrade cycle, with huge leap on the technical upgrades. (gamenguide.com)