The new forum version comes with a huge set of new images. The following explain the most important ones:
Toolbar
Your inbox of private forum messages. No new messages.
Your inbox of private forum messages. New messages.
Your personal forum settings, including signature, avatar and notifications.
Lists your own postings at Swyx Forum.
Search within the forum.
Go back to the complete forum list.
Go to the aggregated forum, containg posts in special orderings, like the most recent posts.
Moderate posts. This button is visible for moderators only. As the forum on Swyx Forum is currently completely unmoderated this button is useless.
Thread Status
Standard thread (contains no unread posts, contains unread posts).
Hot thread, has been read many times (contains no unread posts, contains unread posts).
Pinned thread, will be displayed always on top of the thread list of a forum (contains no unread posts, contains unread posts).
Locked threas, no further postings possible to this thread (contains no unread posts, contains unread posts).
All combinations of the above icons are possible.
Thread Type
The standard thread (None Specified) does not have any special icon.
Unresolved. This thread contains an unresolved problem. Each posting contains a link "Accept Answer" to change the type from "Unresolved" to "Resolved".
Resolved. The problem that was discussed in this thread has been resolved.
Informative. This thead contains common informations.
Poll. This thread contains a poll. When adding such a new thread you have to define a question an a set of answers. These will be afterwards displayed at the top of the thread along with the poll results.
Forum Types
Unmoderated forum (contains no unread posts, contains unread posts).
Moderated forum (contains no unread posts, contains unread posts). All postings in this forum need an approval by one of the forum moderators. Currentyl there are no moderated forums at Swyx Forum.
Private Forum (contains no unread posts, contains unread posts). This forum is visible for certain users of Swyx Forum only. Most likely these are forums for internal discussions of the moderators, bloggers or project team members.
Aggregated forum. This forum contains aggregated lists of postings, like the most recent postings at Swyx Forum.
Link forum. This is a link to another page (e.g. another external forum) and no real forum on Swyx Forum.
Other Icons
Posting has been edited after it was originaly posted.
Posting has been reported to contain abusing content.
New posting.
Old posting.
Online status of poster, logged off.
Online status of poster, logged in.
User Ranking
to 
in steps of
1, 10, 20, 30, 40, 50, 100, 200, 350 and 500 (or more) posts.