BBM Fusion returns as a sort of follow-up to the flagship sets. It's a bit of a mash-up of the best of the year and history.
While 1st Version Update and First Pitch are both numbered separately from the base set, they are frequently included as a "complete" set. However, especially with the First Pitch, they might be left out.
BBM's thematic sets have always been interesting to me, and Fusion is no different. While my Japanese reading abilities are still pretty poor, I can usually figure out what the player is being honored for. In fact, if I knew it was doable, I would go back and find all of the Historic Collection sets BBM issued over the years. I hope to see Fusion again next year, too! (Although they did reuse photographs between the base and autographs. It looks like the insert photos changed, thankfully.)