Katy B's Album ("Honey") is now showing up in the Hot New Releases Top 100 (on Amazon), admittedly only at number 80, going to have to improve on that to put in a challenge for the Top spot the week after next.

 

As long as it can remain within the Top 100 on there and actually climb over the next few days, it could do alright. Katherine Jenkins is at 164 at time of writing, but did have an advantage of a signed edition a few weeks ago (which sold out pretty quickly like you'd expect), so it could be a close one between them both. I imagine Katy will fare well on iTunes though compared to Katherine.

I think artists like Katherine Jenkins rarely do spectacularly on pre-orders, they're usually just highly promoted in stores and supermarkets, as well as on the TV for the first week of release, and end up getting good casual buys from people who like that music but probably wouldn't know in advance that they have a new album out.