By Kasper Jade

Published: 03:00 PM EST (12:00 PM PST)

Apple Computer is in the process of nailing down leases and renovation plans for four additional retail stores this year, including two more locations in California, one in Massachusetts and another in the New York City borough of Staten Island.

Over the next seven months the computer company and emerging retailer is expected to open at least 20 new stores, with some reports predicting that as many as 30 new outfits will surface. The four latest locations where first discovered by ifoAppleStore, which posted the news to its Web site earlier this morning.

Apple Store The Oaks, California

The first of two new California-based stores will open this summer at The Oaks Mall located in Thousand Oaks, California. The two-level enclosed, super-regional shopping center spans 1.1 million square feet and is home to 120 top-tier retailers including Ann Taylor, Williams Sonoma, Pottery Barn, Banana Republic, Sharper Image, Cache and BeBe.

According to sources, Apple will move into this second level location formerly occupied by Eddie Bauer. The location is long and narrow but comparative in size to an adjacent location occupied by the Cheesecake Factory restaurant. The store is expected to open sometime this summer or fall.

Apple Store Brea Mall, California

A second California location is reportedly slated for the Brea Mall, located off of the Orange Freeway in Brea, Southern California. This upscale shopping center hosts 5 major department stores - Nordstrom, Macy's, Robinsons-May, JCPenney and Sears - plus 175 specialty shops.

According to sources, construction of this store has yet to begin and rumor has it that a lease has been prepared but remains unsigned. Still, Apple is expected to proceed with plans to launch the location, in a newly constructed retail space in the mall, around September or October.

Apple Store Burlington, Massachusetts

Over on the east coast, Apple has inked a deal with Simon Properties' recently renovated Burlington Mall, which will deliver Massachusetts its sixth Apple retail store. The new store, due to open sometime this Summer, will join three existing Mass. Apple stores in addition to upcoming locations in Braintree and Hingham.

The upscale shopping center is anchored by Filene's, Lord & Taylor, Macy's and Sears and features more than 155 specialty shops and a 775-seat Food Court. According to sources, Apple will take over a lower-level storefront in Location C, formerly occupied by lingerie retailer La Senza.

Apple Store Staten Island, New York City

Arguably the most anticipated of the four new store locations is one planned for the Staten Island Mall in Staten Island, New York. It will mark New York City's fourth Apple store, joining three other Manhattan locations, including an existing flagship store in SoHo and upcoming locations in Midtown and the Flatiron district.

However, as is the case with the Brea Mall location, sources say a lease for the Staten Island store has been drawn but is not yet inked. Although the store is expected to launch in time for the holiday shopping season, no further details are available.

The Staten Island Mall is the islands only regional mall and is anchored by JCPenny, Macy's, and Sears. It's also home to over 180 other retailers including Abercrombie & Fitch, Ann Taylor, GUESS, New York & Company, and Nike.

Apple Store Yorkdale, Toronto, Canada

In related Apple retail store news, the company this week quietly announced plans to launch its first Canadian-based store at the Yorkdale Shopping Center this Saturday at 9:30 am.