These were found at one of the Toyfairs at the start of the year, but not at the Australian one, so I haven't seen these in person yet.

Hexbugs are a concept that have been out for a few years now, and the distribution license for Australia changed hands earlier this year, so we might not even see these Transformers-themed ones here as the current distributor rebuilds the product range in stores this year.

For those who are not even familiar with Hexbugs, they are tiny (and I mean tiny... the size of a small cockroach) battery-operated, vibrating "bug"... that can "fight" by bumping into other Hexbugs and knocking them off a platform "stadium/battle arena".
You can't control them, so movement appears to be random - just point it in one direction and let it go.
The larger ones comes with attachable parts for "battle", and takes 2 button-cell batteries. The smaller ones have a couple of add-on parts and take just one button-cell battery.

Official Images and details can be seen here.
They should be out in America in (our) Spring, so if they are coming here, it could be in that later part of the year.

Prices are expensive for something so small... and they are licensed items, so are not Hasbro toys.

Hexbug Nano (small) - US$8
(Bumblebee, Crosshairs, Drift, Galvatron, Lockdown, Optimus Prime)

Hexbug Warriors (big-ish) - US$10
(Bumblebee, Crosshairs, Drift, Galvatron, Lockdown, Optimus Prime)

Hexbug Warriors Arena (small) - US$20
(includes 2 Hexbug Warriors - Galvatron & Bumblebee)

Hexbug Warriors Battle Stadium (big) - US$40
(includes 2 Hexbug Warriors - Lockdown & Optimus Prime)