The need of outcome based education has tremendously affected Learning Technology Market. The vendors of Learning Management Systems are looking the every possible alternatives and services required to meet the customer and learners requirements. Evolution of eLearning systems that are targeted towards implementation of adaptiveness in terms of personalized learning, learning contents, learning styles to ensure efficiency of learning is discussed in this article. Also different types of adaption in eLearning environment and independent eLearning systems which implemented the adaptivity at various levels are analyzed thoroughly on the parameters like learning style, mode of operation, learner’s interaction as well various methods used for implementation are studied and we have tried to sum up the important researches that are helpful to improve and provide better services adaptable in eLearning systems. The proposed hybrid adaptive model for eLearning Systems will further add a new dimension in adaptive eLearning Systems. General Terms: Learning Environment, eLearning, Learning Style. Keywords: Adaptive eLearnig Systems, Learning Style, Learning Models