Patience, friend. I, too, exclusively play on the 360, and we should be getting the rest of 1.2.4 within a month or so hopefully. That update will include 2 mounts, and several summoning staves and 2 summoning armor sets.
Pre-Hardmode Items include Imp Staff, and the summoning set/staff crafted from Queen Bee drops. I don't recall their names. In Hardmode, we'll have the Optic Staff, the spider armor set, two staves also crafted from spider fangs as well. Sorry, not sure what they're called, either.
I'm really looking forward to doing a full Summoner playthrough after we get the update.