What are the drop rates for the 6 items added in today's update? Is the chance to receive each item the same?
No, the drop rates between different items are almost certainly not the same.
In the last two days of idling on two accounts (two weeks' worth) I've got:
- 1 hat (woohoo!)
- 19 weapons
- 9 fish,
- 8 lint,
- 4 barn door planks,
- 3 banana peels and
- 1 cheese wheel.
This is hardly evidence but an example of what to expect. Some items are likely more rare than others.