The YF-19 was first released back in 2006, the new packaging version is just same mold with some bugs removed.
IIRC Yamato has defined their Macross toy line in 3 generations.
First Generation (1G) 2000~2003
Typically the 1/72 Mac+ and V1 VF-1. These are the very first Yamato Macross line.
Second Generation (2G) 2003~2008
1/48 VF-1, YF-19, YF-21 etc are the new generation with better scuplt and transformation mechanism which they have re-engineered everything. The 2G toys are great, but the toolings are still not perfect, you will find uneven panels, loose fitment and gap here and there.
Third Generation (3G) 2008~2010
VF-11B, V2 VF-1 and any valkyries that are available in this timeline are regarded as 3G with much more advance toolings. 3G has flushed fitment, more gimmicks, more advance tampo printing technoloy and molds to create better seam line, panel line, and texture.
The V2 YF-19 is still a myth, plausible toy as G3 toy line which may comes in near future after the Fire valkyrie, but none was confirmed.