The LoK website has been updated to reveal the "extra bank space" will be sixteen slots.... basically it doubles the amount of space we currently have..

Edit:

Lemme clarify this :)

They will be adding eight extra slots, so the total available will now be 16.

Oh good now I only have to keep 3 mules instead of 6 :)

Doubling the bank was what I was hoping for, I had a pessimistic view it'd be something like only 2 more slots ( making 10 total). I'm glad they doubled it. All those NoDrop quest items can really take up space.

Doubling the bank space is great but it sort of irks me how they tell us for years that technical limitations prevent things, then when they see a way to make money off it, all of a sudden those technical barriers are forgotten :/

<blockquote><strong><em>Quote:</em></strong><hr>all of a sudden those technical barriers are forgotten[/quote]
No, they got rid of the limitation - the old UI couldn't support the change; the UI can.

And we all know what <em>else</em> the new UI can handle now, right?

<blockquote><strong><em>Quote:</em></strong><hr>And we all know what else the new UI can handle now, right? [/quote]

More healing spells?

OMG I AM BUYING THIS EXPANSION NOW!
YES!

<blockquote><strong><em>Quote:</em></strong><hr>
And we all know what else the new UI can handle now, right?
[/quote]

/em imagines having 16 spell slots

Verant/SOE always said that the 8 spell slots was to ensure that people have to make meaningful decisions about what spells they keep memorized, rather than any limitation of the UI or storage concerns, which was the case with the bank space.