A couple of announcements surfaced today, one each for both of the smartphone heavyweights - Apple's iPhone and T-Mobile's G1. If you own, or are considering, one or the other, keep reading.

Amazon Updates Kindle App for iPhone

Score a win for iPhone owners, who now have an improved Kindle app to mess around with. Now in version 1.1, the updated release addresses a few customer complaints, one of them being that users can now read in either portrait or landscape mode. And to make reading easier, you can now change the background and text color combination. Other changes include tap support for turning pages, and multi-touch pinch to zoom in on images.

G1 'Cupcake' Update Pushed Back Until June

G1 owners who have been anxiously awaiting the much anticipated 'Cupcake' update (Android 1.5) will have to wait a little longer. What was originally supposed to be an "early May" release looked like it was finally going to start trickling out this week in the U.S., but word has come down that the update has been delayed at least one more week.

"We are working diligently to get Android 1.5 out as soon as possible, while aiming to ensure a consistent, positive experience for our customers," a T-Mobile forum moderator announced. "We're finalizing this build this week to ensure optimal functionality and smooth delivery. Therefore, the rollout schedule has been reset by approximately a week, and we expect all G1 customers will have the update by early June."

Barring any last minute changes, Android 1.5 will add on-screen keyboard support with auto-correction, text prediction, user dictionaries, and third-party keyboard layouts, live folders, folder shortcuts for YouTube favorites, starred contacts, MPEG4 and 3GP video playback, stereo Bluetooth, a new Linux kernel, browser enhancements, and several other goodies.