I did search and I looked on apple.
But I am a bit confused still.
I don't know much about the technical end of computers.
So who exactly would use this?
People, who need fast transfer rates for huge amounts of data, most common example is film/video editors, who need a fast data throughput with all the footage they use.
As TB also allows daisy chaining, one can use up to six TB devices via one port, including one or two displays.
Firewire 800 is already fast, but with the arrival of SSDs and more and more RAID systems (several HDDs or SSDs combined to allow for more data throughput), TB has a clear advantage, though FW800 allows up to 63 devices connected to one port (but no display). I have successfully connected twelve HDDs to one port via this port, but TB clearly offers much more data throughput and options, than FW800 does.
Hopefully we will see more acceptance of TB this year, as last year was a bit slow in this regard, though it seems, that this year is heading in the right direction.
Example:
FW 800 offers approx. 70 MB/s, TB offers (with a RAID system of several HDDs or with SSDs) up to 1 GB/s, thus 1 TB of data (not much, when one edits with footage, that is properly encoded or even uncompressed), can be copied in 17 minutes via TB, while it would take FW800 237 minutes, a disadvantage of 13 times slower.