FLO, new flat bottom brewer from Varia and Kurasu.

I personally think this has potential for the following:

• stainless steel material. Great for people who wants to avoid plastic.
• insulated twin wall. Should offer good heat retention.
• smooth wall. Should make it possible to negotiate paper filter to make it into a no bypass brewer.

The replaceable base is just a bonus IMO. I personally will probably just choose the fastest one and rarely change it if I own one.