Among the photos published on dedicated Apple news site 9to5Mac on Wednesday was one of an information board at the site, which listed the expected date of completion to be Oct. 31.

The photos also showed significant work underway on the first to third floors of the mall.

Local Apple blog My Apple Singapore, which has been tracking the store's progress since last November, also noted in a post on July 21 that it had made "substantial progress".

It observed that the white canvas at the front of the mall had been removed, which suggested that works were now focused on the installation of its "front facing huge glass panels like other renowned Apple Stores around the world".

Wooden crates marked with the logo of German glass manufacturer Seele, which typically provides the glass panels for Apple Stores around the globe, were also seen placed outside the mall.

(Read also: Apple's stores getting new look as other retailers struggle)

Plans for the store were first leaked last October, when a former tenant at Knightsbridge, Pure Fitness, sent e-mails to its members saying it was closing to make way.

Four other tenants - clothing shops Tommy Hilfiger, Topshop/Topman and Brook Brothers, as well as watch retailer Dickson Watch & Jewellery - were also affected.

Apple began its hiring process the following month, listing 14 job positions for a retail store in Singapore.

While the tech giant had since confirmed it was opening a store in an interview with The Straits Times last November, it declined to reveal the store's location, its opening date, or how many people it was planning to hire.

The store will run entirely on solar energy.

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