Upgrade from Cannon 1000D to Cannon 60D?

Should I upgrade from a Cannon 1000D to a Canon 60d?

The sensor size of both the cameras are almost the same.
1000D: APS-C 22.2x14.8mm
60D: APS-C 22.3x14.9mm

I can't switch to a Nikon because I have already purchased two Cannon EF-S lenses. I shoot mostly products.So, faster focus really doesn't help. Would the 60D expose a picture better than the 1000D. Should I wait a year for Cannon to bring out a larger sensor with the capacity to use EF-S lenses. Please give me your opinion.

I don't think it would make sense to upgrade the camera body. I assume you use mostly studio conditions, in which you can control the lighting situation by yourself, so the somewhat better high ISO performance of the 60D isn't an issue.

"Should I wait a year for Cannon to bring out a larger sensor with the capacity to use EF-S lenses?"

Unless i completely missed groundbreaking news i don't think that's going to happen. I find it extremely unlikely that Canon would introduce another intermediate between APS-C and full frame - especially since Canon has just released a "prosumer" full frame DSLR, the 6D.
Also, even if such an intermediate were made, then EF-S lenses likely wouldn't be able to fill the frame for that format either. They were specifically designed for APS-C after all.

If you have money to invest into your photgraphy, then perhaps a good lens if you don't have one yet, a good tripod with rail setup for closeup shots, and additional lighting gear may be a better investment.

PS: IThe company name is spelled Canon, not Cannon.

Stick with what you have it will fulfil all your needs if you use it properly

EF-S lenses will NEVER work on a full frame sensor camera. The mount is not the driving factor. They have been made smaller and lighter by reducing the projected image size to cover an APS-C sensor. The image will not cover a full frame sensor.

a 60D will not expose an image better than your 1000D - getting the exposure right is your job - the camera only guides you - pretty well in most cases but ultimately it is down to you.

My current camera is the same vintage as yours - I have the 450D. If it broke I would likely replace it with a 60D but until then the 450D does just fine.

If you need/want video then upgrade to the 60D - otherwise - why bother? Better spend cash on better lenses.
If you just want a new toy and have the cash then that is fine - go ahead. Just don't expect a step change in image quality.

The principle factor in image quality (apart from user skills) is the LENS. It will be better to get good quality, fast lenses rather than waste money on a body upgrade.

As you are doing product shots, you also want to invest in some good off camera lighting. Fast glass + good lighting will far outperform a better body.

If you own one, and STILL can't spell, 'Canon,' you have far deeper problems.