Re-releasing the iPhone 4's awful industrial design to the current market is just asking to be savaged by critics, who will rightfully ding the phone for:
1. Not being competitive with current Android offerings (no LTE / 4G support, no large screen, no improved battery life)
2. Not justifying the wait and cost when it supports exactly 0 new features in iOS 5 compared to the iPhone 4
3. Not increasing durability when the glass build has been roundly criticized as being too fragile to use for building a piece of consumer electronics.
Sell on Apple stock if this is the best their geniuses have cooked up for the iPhone 4S.
You perhaps should already know this but maybe you don't read many quality 'tech sites'. When the iPhone4 was launched it was quickly lauded as being a design classic reminiscent of Leica cameras or the Braun product range of the 60's. It has gone on to become the worlds best selling phone.
Without being aware of these things it is highly unlikely that anyone would feel compelled to take your advice on what they should do with their Apple stock.