I don't know if I just never noticed this before or if some software switch was just turned on, but I now see a note about new posts when I go into a thread. It's on the right, just next to the post number.
New #15
It's a great tool because it tells you exactly which posts are new since the last time you visited a thread. So if you don't use the "new posts" tab to visit threads for updates, you can see which posts are new this way.
UPDATE: Now that I researched it a bit more, I think that notification is only for posts that have been made today. I went into some threads that I don't usually view and haven't been in for months and only today's posts contained that note. So, it may not be the useful alert tool I thought it was.
New #15
It's a great tool because it tells you exactly which posts are new since the last time you visited a thread. So if you don't use the "new posts" tab to visit threads for updates, you can see which posts are new this way.
UPDATE: Now that I researched it a bit more, I think that notification is only for posts that have been made today. I went into some threads that I don't usually view and haven't been in for months and only today's posts contained that note. So, it may not be the useful alert tool I thought it was.