TCX/VS
The Thomas cook booking engine seems to be a work in progress, as for example JFK shows as a daily flight next summer but not mentioned in the press release as receiving an increase.
Boston seems to be 4 weekly for June only, with the rest of the summer seeing 3 weekly, which is still an increase.
Los Angeles still shows the 2 weekly like this summer at the moment with San Fransisco still not bookable, so, definately a work in progress.
In terms of VS on Boston for a seat comparason, it's also worth noting GDS shows VS going 3 weekly in the peak summer from 28th July, with an extra flight on Fridays. It was briefly bookable on the virgin/delta websites but has since been taken off again. But. As July is a long way off, will probably be added in again.
All in all, a significant increase in US operations from Manchester next summer, and will need to be closely watched given 3 airports are loosing either all or half of their TATL ops next summer (NCL/LCY/LTN).