Live box delivery is dependent on courier, expect upto 10 days.
Speed update depends on wether your exchange can take it. If it can then a couple of days (mine can't so I,m still on 2Mbs.
Have fun installing the livebox, I can connect by wire on all my PCs but only one (with built in wireless, other use USB aaptors) will connect wirelessly and open web pages. Have now spent a fortnight "kicking them".