How do they plan to maintain the code for HTML WYSIWYG composer, IRC chat client, when current and future releases are based on modern Gecko and Firefox? Will composer in particular be dropped sometime in future? It is (in my opinion) one of the selling points of SeaMonkey as its a really easy to use HTML editor for creating quick pages.
I can't answer your question (I don't use that part of Seamonkey), but I have the feeling they are unfortunately following the same steps as the main Mozilla product, just with some (appreciable) delay: they dropped GTK2 support in last version, and they are dropping ALSA support soon (I thought in this release, but I don't see it written in this page), both things I need on my Linux setup. Another user said he was happy to see this new release for his XP laptop; well, they are supposed to drop XP in this release too :-(