In 4.3.30-beta we've added PSDs to the Images node. This lets you easily recreate your PNGs and attachments from one or more PSDs. It's a better workflow that using the Import PSD dialog, since it remembers each PSD and the settings per PSD file.
4.3 should now be feature complete! That means we'll focus on bugs, stability, and the runtimes until it's ready to be released as non-beta.
Thanks to everyone who is testing the beta and reporting any issues you encounter!