Same page, same layout, same everything — your daily routine here doesn't change one bit.
When you write a message you'll see a new "Attach Photos" button. Pick the photos from your computer and they appear with your post — no outside photo site needed.
You'll see a small Original / Updated switch in the bottom corner of the board. Click "Updated" to try the new look — click "Original" to go right back. The classic board stays the default.
Same threads, same people — just a fresher coat of paint, with reading and replying on one page. Totally optional: try it, or ignore it and nothing changes.