The new entry level E-450 is an upgrade to the compact E-420 with:
- Three Art Filters (Pop Art, Soft Focus and Pin Hole)
- TruePic III+ processor
- Increased continuous shooting buffer (8 RAW files, rather than E-420’s 6)
- Improved screen (The luminance has been improved on the existing HyperCrystal II panel)
Unless you really couldn’t afford it, or the smallest size is really most important to you, I would still opt for the new E-620 over the E450 as the image stabilisation and other features make it a more versatile camera.
Olympus has also released a firmware update for the E-30 digital SLR. Version 1.1 rectifies minor issues with image playback and quietens operation of the Image Stabilizer when used with Imager AF and Hybrid AF modes of the camera.