Yes, but...
I have to go into the thread to know that. Just like you display the last post in each thread, in each forum, I think it will be a nice thing to have the date when a thread was created.
This will be useful in distinguishing similar looking threads or those with generic headings (for examples, threads just simply say "Aug RD approved today"). A user can know whether this is a new thread or a similar old one that resurfaced because someone brought it up bu posting a reply in that thread.
Thanks.