I found this info via a tweet from @ on twitter.
There will be an Arena REQ bundle available to purchase on February 16.
This will work the same way as the Warzone bundle did at Halo 5’s launch. For $25, you will receive a code that grants you 14 REQ packs. You will receive 2 of those a week for 7 weeks.
It should be important to note that in so far as we know, all the REQ cards acquired through the Arena bundle will also be able to be gained by regular REQ packs.
Here is a closer look at the middle of the image:
It looks like we are getting a stance called ‘Old School’. Note the pistol. Could this be the Halon CE pistol?? The other cards shown are already available to earn via the January update.
There is no significant advantage to getting this pack, unless you aren’t playing often enough to get at least 2 REQ packs a week. Honestly folks, this is EASY to do! One night of gaming for no more than 2 hours will net you this…
At any rate, this will go live on the 16th. You can purchase in-game. The source link I have for this is from a page on Amazon.com.
Thanks again to thechiefcanuck for passing the info on to fellow Halo Fans!