So far, I have not heard of the new import regulations affecting foreign visitors coming into China through airports at all, pretty much same old, same old. Unless you are really heavily burdened with an unusual amount of luggage, or appear to be African, usually you just walk by Customs without them asking you to put your luggage through xray. Returning Chinese travelling ultra heavy, or with boxes, are often told to put their stuff through.

Mostly, the new import regulations--mainly an increase on duties--are geared to goods entering the country as package delivery shipments through the mail or courier service. Many urban Chinese, fed up with ridiculous local prices on foreign products, have been buying online and having stuff shipped in. The government, and local merchants and their cronies, have not been happy about this fast-growing trend, and are aiming to put a stop to it.

For the average visitor, plausible quantities of electronic goodies probably will have no issue, though a suitcase full might (in the unlikely event you get pulled for a Customs inspection). If anybody does have an incident to report though, particularly when entering China at one of the airports, please do post the details.