For developers looking to get a jump on the upcoming BlackBerry Curve 9220, RIM has released the 9220 device simulator so you can get your test on. If you have your app available for the 9300 series, you should have no issues getting it set for the 9220. The BlackBerry App World storefront is open now for the Curve 9220 as well. In addition, RIM has posted the specs for the Curve 9220 once again:
You can grab the 9220 device simulator free from the link below to get started.