The new emoji, which include characters in different types of wheelchair, as well as designs showing a partially-sighted person with a cane and a deaf person are among the new designs that will be made publicly available in the autumn.
The preview, which also includes new emoji depicting guide dogs as well as a sloth, flamingo, butter and falafel, has been published to coincide with World Emoji Day on Wednesday.
The new designs were confirmed earlier this year by the Unicode Consortium, the body which maintains and regulates the library of characters.
Last year, Apple said it wanted to improve the representation of those with disabilities, submitting a number of designs to Unicode after consulting a number of campaigns and charities on the issue.
Earlier this year, 60 new designs were approved by Unicode to add to the official library of characters.
The update also includes a number of new variations for gender and skin tones for the “people holding hands” emoji, enabling users to create a wider range of mixed gender and ethnicity couples when using emoji.
The image-based characters are used by major tech firms including Apple, Samsung, Google and Microsoft across their range of devices and platforms.
The update also includes a new “drop of blood” icon which Unicode suggests could be used by women to offer a new way to talk about menstruation.
It follows a campaign by girls’ rights charity Plan International UK to introduce a period-themed emoji.