Shimano's shoe lineup has always featured a wide spectrum of price points and features, with solid durability and performance making them a very good option for those looking for a pair. I've personally been a big fan of the ME7 enduro shoe for years, as it strikes a solid balance of durability, stiffness, and comfort in an easily-adjusted package.
Sadly, a few old models are being phased out to welcome the new additions to the lineup, but hopefully the new shoes are up to the standards of their predecessors. The GE series replaces both the ME7 and AM9, and the GF6 replaces the GR9. Incomprehensible naming schemes aside, it does seem they're trying to clean up the lineup.
There are 3 new SPD-cleat options, and 3 new flat pedal options; see below for a breakdown of the whole new lineup.GE900$225 USD / €219.95 // Size 38-48 // 423g
GE700$180 USD / €179.95 // Size 38-48 // 417g
GE500 & GE500W$140 USD / €119.95 // Size 38-48 (M), 36-44 (W) // 375g
GF600$160 USD / €169.95 // Size 38-48 // 397g
GF400 & GF400W$120 USD / €114.95 // Size 33-48 (M), 36-44 (W) // 343g
GF800GTX$220 USD / €219.95 // Size 33-48 // 390g
We'll have a few pairs of the new shoes in for long-term review, so stay tuned for thoughts on the updates and new features.