I tried doing a falling up air on someone grounded and was unable to get a hitbox to connect. the hit box might not extend as far down the hilt of the sword as in smash 4. also if you do a soft throw of a bomb upward from a standing position and detonate the bomb as soon as possible, the explosion misses your and you do not get hit. recoveries from bomb explosions seem impractical. the time of bomb release to detonation is almost 1 second. I feel saving your jump off stage, directional airdodge toward ledge, then double jump, then up-b is better than using a bomb to get your up b back.
the biggest adjustment in playing Link so far is his bombs. i am so used to bombs exploding on their own (ever since smash 64 ! ) that i found myself forgetting to detonate them. however i was able to get some slick set ups: take out bomb, run toward opponent, bait shield, grab, down throw, then detonate bomb.
overall, his aerials all felt VERY very satisying. his down air is amazing rightnow, with such little landing lag. back air can lead into a forward air follow up very nicely. up throw seems to have decent knock back. You can do jab 1 and 2 and then mix up with a down tilt to foward air , but most of the time it seems as the full 3 jabs is optimal unless you need a mix up. i was able to get the full 3 jabs and run into a dash attack rather easily. i think this is because everyone is generally faster. i was also able to do the full 3 jabs and dash into a nair to get a nair lock fairly easily.
his arrows felt nice and his boomerang not having a wind box, and also having a hitbox on return feels great.
overall, Link feels amazing. his bombs will take time to get used too but I think they are GREAT for ledge gaurds. all you have to do is z drop a bomb at the ledge and you cover practically EVERYTHING. knock opponent off stage, pull out bomb, z drop at ledge, go off stage to pressure opponent with nair/fair, get back on stage, they try to recover and you detonate the bomb. Link has soooooo many intricacies in this iteration of smash, its going to be so much fun exploring it. THEY NEED TO RELEASE A DEMO FOR THIS.
oh, and on the start up page for ultimate, it said, "event build 2018/ ver 6.0" or 0.6. something like that. so i could see them drastically changing things before release.