Chou Dengeki Strykers 「超電激ストライカー」 announced at Katsucon, is the generous upgraded version of Dengeki Stykers that features new content. First released 27th July 2012, they were selling the upgrade (or expansion pack if you will) for 2,310 yen to existing owners.. The expanded version has 3 new routes (Rin, Hiruko + new chara Kurie). New characters appear. New animations & opening movie. It has more tachi-e (sprites), more CGs, and the battle scenes has added effects.
The other announcements were just nukige and a limited boxed edition of Otoboku which you can read about here.