The veteran actress is reportedly set to start work on the series this month and it's expected to hit screens at the start of next year.
Wendy is thought to be playing a 'loud-mouthed, rude' wheelchair-bound character, reports The Sun.
"She is really looking forward to being a part of this series - she was a huge fan of the first," an insider told the paper.
Wendy made her showbusiness debut in Sammy Davis Jnr's 1960 show Sammy Meets The Girls.
She went on to appear in classic projects Danger Man, The Likely Lads and Dad's Army before joining John Inman and the staff of Grace Bros in hit sitcom Are You Being Served? in 1972.
However, she's probably best known for playing Walford's Pauline Fowler, a role she took on in 1985 and played for almost 22 years.
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If this is true I think it's great. I would love to see her do some stuff after EE and to see her in this show would be brilliant!