I feel there is a solid chance Fortune’s Weave Anna will be playable; though whether that is the case at launch is something I am doubtful of. I am just sort of speculating what she will be good at, though I feel Fortune’s Weave will be like Three Houses where you can make units do almost anything.
Anna’s stats usually follow similar trends. She has high skill, speed, resistance and luck, as well as weirdly good magic for a character who hasn’t started in a magic class since Awakening, with lower defense and strength, so generally she has mage stats with very high luck. If we look at the forbidden area of Heroes, 2 versions of her use bows, 2 versions use axes, and 1 version, based on Apotheosis Anna, uses spears. Speaking of, she has used axes in Engage as an axe fighter, swords in Awakening and Three Houses (as a myrmidon in the latter game), as well as bows when she was an outlaw in Fates. Those 3 weapons are her strengths in Three Houses, as well as white magic, which they seem to really want her to use in all appearances, as well as a budding talent of Riding. She does have a bane in black magic though, as well as authority which isn’t great for making her a mage. Her personal skill is Make a Killing, except in Three Houses where it’s just luck +5.
I hope she’ll be a mage at base in Fortune’s weave, though I feel she’ll probably be an archer or axe fighter again.
Also, she has more supports in Engage than the other three games combined, even counting Corrin and Robin twice while counting Alear once, in part due to Three Houses Anna having 0 supports.