NEW YORK (

TheStreet

) -- U.S. stock futures were suggesting a higher Wall Street open Tuesday as investors return from the three-day holiday weekend to find global shares rising on the back of hopes for more stimulus out of China.

European stocks were higher despite fears over the Spanish banking sector.

Asian stocks finished with gains Tuesday on expectations that China plans to relax monetary policy. Japan's Nikkei 225 index rose 0.7% to close at 8,657.08.

The economic calendar in the U.S. on Tuesday includes the release of the S&P Case/Shiller Home Price Index for March at 9 a.m. Economists expect the 20-city seasonally adjusted index to rise 0.3%, versus a 0.2% increase in February, according to

Reuters

.

The Conference Board releases its read on the consumer confidence for May at 10 a.m. Economists expect a reading of 70.0; April's number came in at 69.2.

Facebook

(FB) - Get Report

is reportedly in talks to buy

Opera Software

, a Norwegian marker of Internet browsers.

The news was first reported Friday by U.K.-based technology Web site

Pocket-Lint

.

There are also reports the giant social networker could release a smartphone next year.

The New York Times

cited employees of Facebook and several engineers who have been sought out by recruiters at the company.

Facebook already has hired more than half a dozen former

Apple

(AAPL) - Get Report

software and hardware engineers who worked on the iPhone, and one who worked on the iPad, the

Times

said.

Speaking of smartphones,

Samsung

launched its Galaxy S3 smartphone in Europe on Tuesday. The Galaxy S3 went on sale in 28 European and Middle East countries.

The phone includes a bigger screen size and an eye-movement tracking feature to keep the screen from dimming.

Samsung, the world's largest smartphone maker, hopes to maintain its lead over Apple, which is expected to launch a new iPhone in the third quarter.

All Things D

, the technology Web site, opens a conference on Tuesday. Speakers at the event are expected to include Apple CEO Tim Cook and

Oracle

(ORCL) - Get Report

CEO Larry Ellison among others.

Dewey & Leboeuf filed for chapter 11 bankruptcy protection on Monday. The filing marks one of the biggest collapses of a law firm in U.S. history,

Reuters

said.

By the end of May, about two-thirds of Dewey & LeBoeuf's roughly 320 partners had left, and the Manhattan District Attorney's Office had launched a criminal investigation into activities at the firm,

The Wall Street Journal

reported.

-- Written by Joseph Woelfel

>To contact the writer of this article, click here:

Joseph Woelfel

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